JPH0463840A - Transparent flexible polyvinyl chloride resin film excellent in slipperiness - Google Patents

Abstract

PURPOSE:To obtain the title nonblocking film by adding a specified amount of an amide lubricant to a PVC resin, kneading the mixture under heating, forming the obtained composition into a film, and spraying a specified powder over at least one surface of the film before winding. CONSTITUTION:0.001-0.1 PHR of an amide lubricant having a structural formula of the formula: RCONH(CH2)nNHCOR (wherein R is 6-22 C alkyl; and n is 1-10), RNHCO(CH2)nCONHR (wherein n is 2-8) or RCONHR' (wherein R' is R) is added to 100 pts.wt. PVC resin (e.g. PVC) and the obtained mixture is kneaded under heating. The obtained composition is formed into a film, and a powder (e.g. starch) of a mean particle diameter of 3-30mum is sprayed over at least one surface of this film before it is wound.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a flexible polyvinyl chloride resin film with excellent slip properties. Specifically, the present invention relates to a transparent film with excellent slip properties that prevents films from adhering to each other and causing no blocking when a soft polyvinyl chloride resin film is subjected to secondary processing.

<Prior art and its problems> In general, flexible polyvinyl chloride resin films have excellent mechanical properties, chemical resistance, etc., and are inexpensive, so they are widely used in daily necessities and the like. However, since it contains a plasticizer, the surface of the film exhibits stickiness, and when the film is subjected to secondary processing such as cutting, welding, and printing, the surfaces of the film block together, making it difficult to handle.

Therefore, a method has been put into practical use in which a soft polyvinyl chloride resin composition is heated and kneaded to form a film, and an anti-blocking agent such as starch or talc is sprayed on one side of the film immediately before it is rolled up.However, Depending on the amount of anti-blocking agent such as starch or talc, and how it is sprayed on the film surface, the surface of the film may block together, and the appearance and transparency may be impaired.Also, over time, the plasticizer may deteriorate. It has often been seen that the adhesive bleeds onto the film surface, increases the tackiness of the film surface, reduces the anti-adhesive effect, and causes blocking problems.

Furthermore, there is a method in which an additive that imparts an anti-adhesive effect is cross-wired and dispersed in a soft polyvinyl chloride resin composition and then formed into a film. However, depending on the type and amount of additives used, the thermal stability may be impaired during the process of heating and kneading the resin composition to form a film, and the appearance and transparency of the film may deteriorate, so be careful when using additives. There is a need to.

<Means for Solving the Problems> Therefore, the present inventors have conducted extensive research in order to overcome the problems of the above-mentioned conventional technology and develop a soft polyvinyl chloride resin film with excellent slip properties. , based on 100 parts by weight of polyvinyl chloride resin, the following formula (■) or (2)
) An amide lubricant having the structural formula shown by the formula 0.0
The resin composition obtained by adding 0i to 0.1 PHR and heating and kneading is formed into a film, and before winding up this film, the average particle system is 3 to 30μ on at least one side of the film.
They found that by dispersing the powder, the blocking phenomenon was improved and a transparent film could be obtained.

0 type RCON H (CH2). NHCOR (here R
(2) represents a 6-C22 alkyl group, and n is 1-1
(represents an integer of 0) 0 formula RNHCO(CH2). C0NHR (Here, R represents (2) a 6-C22 alkyl group, and n represents an integer of 2-8) 0 formula RCONHR' (Here, R, R' represents a C6-C22 alkyl group) <Examples> As the polyvinyl chloride resin in the present invention, polyvinyl chloride or other monomers based on polyvinyl chloride, such as ethylene, propylene, alkyl vinyl ether, acrylic ester, vinyl acetate, methacrylic ester, acrylonitrile , copolymers such as urethane, or blends thereof.

The amide lubricant is the above-mentioned type 0 or (2) type or (2)
For example, methylene bis stearamide, methylene bis stearamide,
Methylene bis stearamide, ethylene bis stearamide, ethylene bis stearamide, ethylene bis stearamide, butylene bis stearamide, butylene bis laureloamide, butylene bis oleylamide, hexamethylene bis stearamide , hexamethylene bis stearamide, hexamethylene bis stearamide, and alkylene bis fatty acid amides such as N, N''-distearylphthalamide, N, N'-dioleyladibutamide, N, N'-distearyl phthalamide,
N,N' such as N,N'-dioleylphthalamide
- dialkyl dibasic acid amide, and N-stearyl stearamide, N-stearyl stearamide, N-stearyl stearamide, N-lauryl stearamide, N-lauryl stearamide, N-lauryl stearamide, N Substituted amides such as -oleyl stearoside, N-oleyl laureloamide, and N-oleyl oleylamide are mentioned, and the amount added is (2). 001~Q,
IPHR, and if Q exceeds IPHR, the printing characteristics will deteriorate.

The powder to be sprinkled on the film surface has an average particle size of 3 to 3.
Examples include starch, talc, and blends thereof in the range of 30μ, and the amount of powder is 10μ/d to 100μ/d.
rd is preferable; when the amount is low, it becomes sticky, and when it is high, transparency is lost.

The soft polyvinyl chloride resin composition according to the present invention is blended with a plasticizer, a stabilizer, an organic phosphite compound, etc. in an amount depending on the intended use.

Specific examples of the plasticizer of the present invention include phthalic acids such as di-n-octyl phthalate, di-2-ethylhexyl phthalate, dibutyl phthalate, diisononyl phthalate, butylbenzene phthalate, dibutyl phthalate, diisodecyl phthalate, dioctyl adipate, Adipic acids such as diisodecyl adipate and diisononyl adipate, azelaic acids such as di-butyl azelate, di-n-hexyl azelate, and di-ioticle azelaate, benzoic acids such as diethylene glycol dibenzoate, fumaric acid Fumaric acids such as dibutyl, dioctyl fumarate, diphenoxyethyl fumarate, lauric acids such as butyl laurate, ethylene glycol monoethyl ether laurate, pentaerythrithoric acids such as pentaerythritol tetraacetate, acetylsilinoleic acid Examples include siliconol type such as methyl, sebacic acid type such as dimethyl sebacate, citric type such as acetyl tributyl citrate, glycerin ester such as glyceryl monolauryl diacetate, and other polyester type, and the amount added is 30 to 100 weight. Department.

Examples of the epoxy stabilizer include epoxidized vegetable oils such as epoxidized soybean oil and epoxidized linseed oil, and epoxy resins.

In addition, examples of organic phosphite compounds include trisnonylphenyl phosphite, triphenyl phosphite, diphenyldecyl phosphite, tridecyl phosphite,
Examples include tristearylphosphite.

Furthermore, it is also possible to add antistatic agents, ultraviolet absorbers, and the like.

Examples according to specific embodiments of the present invention and comparative examples thereof are shown below.

The blended composition (parts by weight) shown in Table 1 was heated and kneaded to a thickness of 0.
．． It was rolled into a film on two plates, and the amount of powder shown in Table 2 (
(1)/(C)) was sprinkled on one side of the film, wound around a drum, cut, and its slip properties, transparency, and printability were measured. The evaluation is shown in Table 3.

Table 3 Table E is an evaluation measurement without powder scattering *Slip property A bundle of films cut into 2Qan x 30an was piled up, a load equivalent to 10kg was applied, and two days later, the adhesion of the film was evaluated by touch.

◎: It is free-flowing and does not stick closely. ○: It is free-flowing and it sticks partially. △: The entire area is in close contact with 172 or more areas. ×: The whole is in close contact. Difficult to peel off each film * Visually evaluated the transparency when looking through one transparent film.

◎: Excellent ○: Good △: Slightly inferior ×: Inferior *Printability Silk printing was performed, and ink peeling was evaluated using a cellophane tape test.

No ink peeling occurs for 06 months △: Ink peeling is observed for 1 to 6 months ×: Ink peeling is observed around 1 row <Effect> The present invention is clear from the above results. Like (,0001~r
), by adding rPHR's amide lubricant to form a film and then sprinkling powder with an average particle size of 3 to 30μ before winding, there is no blocking phenomenon (, slip properties, transparency and printing properties It is possible to obtain an excellent film.

Claims (1)

[Claims] For 100 parts by weight of polyvinyl chloride resin, the following (1
0.001 to 0.1 PHR of an amide lubricant having a structural formula represented by the formula (2) or (3) is added and kneaded with heat to form a film, and before winding up the film, at least one side of the film is coated. A flexible polyvinyl chloride resin transparent film with excellent slip properties, characterized by being made by scattering powder with an average particle size of 3 to 30 microns. (1) Formula RCONH(CH_2)_nNHCOR (here, R represents an alkyl group of C_6 to C_2_2, and n represents an integer of 1 to 10) (2) Formula RNHCO(CH_2)_nCONHR (here, R represents C_6 to C_2_2 (3) Formula RCONHR' (where R and R' represent an alkyl group of C_6 to C_2_2)